MNT Reform: Open Source Portable Computer https://mntre.com/reform
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  1. EESchema Schematic File Version 4
  2. EELAYER 30 0
  3. EELAYER END
  4. $Descr A4 11693 8268
  5. encoding utf-8
  6. Sheet 1 1
  7. Title "MNT Reform 2 Keyboard OLED"
  8. Date "2020-04-12"
  9. Rev "2.0D-4"
  10. Comp "MNT Research GmbH"
  11. Comment1 "https://mntre.com"
  12. Comment2 "Engineer: Lukas F. Hartmann"
  13. Comment3 "License: CERN-OHL-S 2.0"
  14. Comment4 ""
  15. $EndDescr
  16. $Comp
  17. L Mechanical:MountingHole_Pad H1
  18. U 1 1 5CFAB6F9
  19. P 3550 5850
  20. F 0 "H1" H 3650 5899 50 0000 L CNN
  21. F 1 "MH1" H 3650 5808 50 0000 L CNN
  22. F 2 "MountingHole:MountingHole_2.2mm_M2_Pad" H 3550 5850 50 0001 C CNN
  23. F 3 "~" H 3550 5850 50 0001 C CNN
  24. 1 3550 5850
  25. 1 0 0 -1
  26. $EndComp
  27. $Comp
  28. L Mechanical:MountingHole_Pad H2
  29. U 1 1 5CFABDD2
  30. P 3900 5850
  31. F 0 "H2" H 4000 5899 50 0000 L CNN
  32. F 1 "MH2" H 4000 5808 50 0000 L CNN
  33. F 2 "MountingHole:MountingHole_2.2mm_M2_Pad" H 3900 5850 50 0001 C CNN
  34. F 3 "~" H 3900 5850 50 0001 C CNN
  35. 1 3900 5850
  36. 1 0 0 -1
  37. $EndComp
  38. $Comp
  39. L power:GND #PWR03
  40. U 1 1 5CFB0132
  41. P 3550 6050
  42. F 0 "#PWR03" H 3550 5800 50 0001 C CNN
  43. F 1 "GND" H 3550 5900 50 0000 C CNN
  44. F 2 "" H 3550 6050 50 0001 C CNN
  45. F 3 "" H 3550 6050 50 0001 C CNN
  46. 1 3550 6050
  47. 1 0 0 -1
  48. $EndComp
  49. Wire Wire Line
  50. 3550 6050 3550 5950
  51. Wire Wire Line
  52. 3550 5950 3900 5950
  53. Connection ~ 3550 5950
  54. $Comp
  55. L Mechanical:MountingHole GFX1
  56. U 1 1 5CFBB66E
  57. P 5150 5800
  58. F 0 "GFX1" H 5250 5846 50 0000 L CNN
  59. F 1 "MNT" H 5250 5755 50 0000 L CNN
  60. F 2 "reform2:mntreform" H 5150 5800 50 0001 C CNN
  61. F 3 "~" H 5150 5800 50 0001 C CNN
  62. 1 5150 5800
  63. 1 0 0 -1
  64. $EndComp
  65. $Comp
  66. L Connector_Generic:Conn_01x04 J1
  67. U 1 1 5D0C1E6C
  68. P 5850 3500
  69. F 0 "J1" H 5850 3800 50 0000 C CNN
  70. F 1 "AUX" H 5850 3100 50 0000 C CNN
  71. F 2 "Connector_FFC-FPC:Molex_200528-0040_1x04-1MP_P1.00mm_Horizontal" H 5850 3500 50 0001 C CNN
  72. F 3 "" H 5850 3500 50 0001 C CNN
  73. F 4 "Molex" H 5850 3500 50 0001 C CNN "Manufacturer"
  74. F 5 "200528-0040" H 5850 3500 50 0001 C CNN "Manufacturer_No"
  75. 1 5850 3500
  76. 1 0 0 1
  77. $EndComp
  78. $Comp
  79. L power:GND #PWR05
  80. U 1 1 5D0C1E81
  81. P 5200 3600
  82. F 0 "#PWR05" H 5200 3350 50 0001 C CNN
  83. F 1 "GND" H 5200 3450 50 0000 C CNN
  84. F 2 "" H 5200 3600 50 0001 C CNN
  85. F 3 "" H 5200 3600 50 0001 C CNN
  86. 1 5200 3600
  87. 0 1 1 0
  88. $EndComp
  89. Wire Wire Line
  90. 5200 3600 5650 3600
  91. $Comp
  92. L Device:C_Small C5
  93. U 1 1 5DC7F0C4
  94. P 3100 2150
  95. F 0 "C5" H 3110 2220 50 0000 L CNN
  96. F 1 "1uF" H 3110 2070 50 0000 L CNN
  97. F 2 "Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 3100 2150 50 0001 C CNN
  98. F 3 "" H 3100 2150 50 0001 C CNN
  99. F 4 "Taiyo Yuden" H 3100 2150 50 0001 C CNN "Manufacturer"
  100. F 5 "UMK107BJ105KA-T" H 3100 2150 50 0001 C CNN "Manufacturer_No"
  101. 1 3100 2150
  102. -1 0 0 -1
  103. $EndComp
  104. Wire Wire Line
  105. 3100 2050 3350 2050
  106. Wire Wire Line
  107. 3100 2250 3350 2250
  108. $Comp
  109. L Device:C_Small C6
  110. U 1 1 5DC82D60
  111. P 3100 2550
  112. F 0 "C6" H 3110 2620 50 0000 L CNN
  113. F 1 "1uF" H 3110 2470 50 0000 L CNN
  114. F 2 "Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 3100 2550 50 0001 C CNN
  115. F 3 "" H 3100 2550 50 0001 C CNN
  116. F 4 "Taiyo Yuden" H 3100 2550 50 0001 C CNN "Manufacturer"
  117. F 5 "UMK107BJ105KA-T" H 3100 2550 50 0001 C CNN "Manufacturer_No"
  118. 1 3100 2550
  119. -1 0 0 -1
  120. $EndComp
  121. Wire Wire Line
  122. 3100 2450 3350 2450
  123. Wire Wire Line
  124. 3100 2650 3350 2650
  125. $Comp
  126. L power:+3V3 #PWR02
  127. U 1 1 5DC84E30
  128. P 2700 2750
  129. F 0 "#PWR02" H 2700 2600 50 0001 C CNN
  130. F 1 "+3V3" H 2715 2923 50 0000 C CNN
  131. F 2 "" H 2700 2750 50 0001 C CNN
  132. F 3 "" H 2700 2750 50 0001 C CNN
  133. 1 2700 2750
  134. 1 0 0 -1
  135. $EndComp
  136. Wire Wire Line
  137. 3350 2850 2900 2850
  138. Wire Wire Line
  139. 2700 2850 2700 2750
  140. $Comp
  141. L power:GND #PWR01
  142. U 1 1 5DC86F36
  143. P 2200 4850
  144. F 0 "#PWR01" H 2200 4600 50 0001 C CNN
  145. F 1 "GND" H 2200 4700 50 0000 C CNN
  146. F 2 "" H 2200 4850 50 0001 C CNN
  147. F 3 "" H 2200 4850 50 0001 C CNN
  148. 1 2200 4850
  149. 1 0 0 -1
  150. $EndComp
  151. Wire Wire Line
  152. 3350 3250 2200 3250
  153. Wire Wire Line
  154. 2200 3250 2200 3450
  155. Wire Wire Line
  156. 2700 2850 2700 3450
  157. Wire Wire Line
  158. 2700 3450 3350 3450
  159. Connection ~ 2700 2850
  160. $Comp
  161. L Device:R_Small R1
  162. U 1 1 5DC8A9C1
  163. P 3050 4250
  164. F 0 "R1" V 3150 4250 50 0000 L CNN
  165. F 1 "330k" V 2950 4200 50 0000 L CNN
  166. F 2 "Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 3050 4250 50 0001 C CNN
  167. F 3 "" H 3050 4250 50 0001 C CNN
  168. F 4 "Yageo" H 3050 4250 50 0001 C CNN "Manufacturer"
  169. F 5 "AF0603FR-07330KL" H 3050 4250 50 0001 C CNN "Manufacturer_No"
  170. 1 3050 4250
  171. 0 1 1 0
  172. $EndComp
  173. Wire Wire Line
  174. 3150 4250 3350 4250
  175. $Comp
  176. L Device:C_Small C3
  177. U 1 1 5DC8CE4C
  178. P 2750 4450
  179. F 0 "C3" H 2760 4520 50 0000 L CNN
  180. F 1 "10uF" H 2760 4370 50 0000 L CNN
  181. F 2 "Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 2750 4450 50 0001 C CNN
  182. F 3 "" H 2750 4450 50 0001 C CNN
  183. F 4 "Taiyo Yuden" H 2750 4450 50 0001 C CNN "Manufacturer"
  184. F 5 "LMK107BBJ106KALT" H 2750 4450 50 0001 C CNN "Manufacturer_No"
  185. 1 2750 4450
  186. 0 1 -1 0
  187. $EndComp
  188. Wire Wire Line
  189. 2850 4450 3350 4450
  190. $Comp
  191. L Device:C_Small C4
  192. U 1 1 5DC8F872
  193. P 3000 4650
  194. F 0 "C4" H 3010 4720 50 0000 L CNN
  195. F 1 "10uF" H 3010 4570 50 0000 L CNN
  196. F 2 "Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 3000 4650 50 0001 C CNN
  197. F 3 "" H 3000 4650 50 0001 C CNN
  198. F 4 "Taiyo Yuden" H 3000 4650 50 0001 C CNN "Manufacturer"
  199. F 5 "LMK107BBJ106KALT" H 3000 4650 50 0001 C CNN "Manufacturer_No"
  200. 1 3000 4650
  201. 0 1 -1 0
  202. $EndComp
  203. Wire Wire Line
  204. 3100 4650 3350 4650
  205. Wire Wire Line
  206. 2900 4650 2200 4650
  207. Connection ~ 2200 4650
  208. Wire Wire Line
  209. 2200 4650 2200 4850
  210. Wire Wire Line
  211. 2650 4450 2200 4450
  212. Connection ~ 2200 4450
  213. Wire Wire Line
  214. 2200 4450 2200 4650
  215. Wire Wire Line
  216. 2950 4250 2200 4250
  217. Connection ~ 2200 4250
  218. Wire Wire Line
  219. 2200 4250 2200 4450
  220. Text GLabel 3350 3850 0 60 Input ~ 0
  221. DISP_SCL
  222. Text GLabel 3350 4050 0 60 Input ~ 0
  223. DISP_SDA
  224. Text GLabel 5650 3500 0 60 Input ~ 0
  225. DISP_SCL
  226. Text GLabel 5650 3400 0 60 Input ~ 0
  227. DISP_SDA
  228. $Comp
  229. L power:+3V3 #PWR04
  230. U 1 1 5DC9A968
  231. P 5200 3300
  232. F 0 "#PWR04" H 5200 3150 50 0001 C CNN
  233. F 1 "+3V3" V 5215 3428 50 0000 L CNN
  234. F 2 "" H 5200 3300 50 0001 C CNN
  235. F 3 "" H 5200 3300 50 0001 C CNN
  236. 1 5200 3300
  237. 0 -1 -1 0
  238. $EndComp
  239. Wire Wire Line
  240. 5200 3300 5450 3300
  241. $Comp
  242. L Device:C_Small C1
  243. U 1 1 5DCAC522
  244. P 2450 2850
  245. F 0 "C1" H 2460 2920 50 0000 L CNN
  246. F 1 "1uF" H 2460 2770 50 0000 L CNN
  247. F 2 "Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 2450 2850 50 0001 C CNN
  248. F 3 "" H 2450 2850 50 0001 C CNN
  249. F 4 "Taiyo Yuden" H 2450 2850 50 0001 C CNN "Manufacturer"
  250. F 5 "UMK107BJ105KA-T" H 2450 2850 50 0001 C CNN "Manufacturer_No"
  251. 1 2450 2850
  252. 0 1 -1 0
  253. $EndComp
  254. $Comp
  255. L Device:C_Small C2
  256. U 1 1 5DCACDA3
  257. P 2450 3450
  258. F 0 "C2" H 2460 3520 50 0000 L CNN
  259. F 1 "1uF" H 2460 3370 50 0000 L CNN
  260. F 2 "Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 2450 3450 50 0001 C CNN
  261. F 3 "" H 2450 3450 50 0001 C CNN
  262. F 4 "Taiyo Yuden" H 2450 3450 50 0001 C CNN "Manufacturer"
  263. F 5 "UMK107BJ105KA-T" H 2450 3450 50 0001 C CNN "Manufacturer_No"
  264. 1 2450 3450
  265. 0 1 -1 0
  266. $EndComp
  267. Wire Wire Line
  268. 2550 3450 2700 3450
  269. Connection ~ 2700 3450
  270. Wire Wire Line
  271. 2700 2850 2550 2850
  272. Wire Wire Line
  273. 2350 2850 2200 2850
  274. Wire Wire Line
  275. 2200 2850 2200 3250
  276. Connection ~ 2200 3250
  277. Wire Wire Line
  278. 2350 3450 2200 3450
  279. Connection ~ 2200 3450
  280. Text Notes 2600 1750 0 60 ~ 0
  281. Based on Adafruit 931
  282. $Comp
  283. L power:PWR_FLAG #FLG0101
  284. U 1 1 5DC67359
  285. P 5450 3300
  286. F 0 "#FLG0101" H 5450 3375 50 0001 C CNN
  287. F 1 "PWR_FLAG" H 5450 3473 50 0000 C CNN
  288. F 2 "" H 5450 3300 50 0001 C CNN
  289. F 3 "~" H 5450 3300 50 0001 C CNN
  290. 1 5450 3300
  291. 1 0 0 -1
  292. $EndComp
  293. Connection ~ 5450 3300
  294. Wire Wire Line
  295. 5450 3300 5650 3300
  296. Text Notes 1500 3700 0 50 ~ 0
  297. Reset RC circuit
  298. $Comp
  299. L SSD1306_OLED-0.91-128x32:SSD1306 U1
  300. U 1 1 5EAB622B
  301. P 3350 3350
  302. F 0 "U1" V 3297 4028 60 0000 L CNN
  303. F 1 "SSD1306" V 3403 4028 60 0000 L CNN
  304. F 2 "KiCad-SSD1306_OLED-0:SSD1306_OLED-0.91-128x32" H 3350 3350 60 0001 C CNN
  305. F 3 "" H 3350 3350 60 0001 C CNN
  306. 1 3350 3350
  307. 0 1 1 0
  308. $EndComp
  309. $Comp
  310. L Device:C_Small C7
  311. U 1 1 5E7CCF56
  312. P 2450 3650
  313. F 0 "C7" H 2460 3720 50 0000 L CNN
  314. F 1 "1uF" H 2460 3570 50 0000 L CNN
  315. F 2 "Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 2450 3650 50 0001 C CNN
  316. F 3 "" H 2450 3650 50 0001 C CNN
  317. F 4 "Taiyo Yuden" H 2450 3650 50 0001 C CNN "Manufacturer"
  318. F 5 "UMK107BJ105KA-T" H 2450 3650 50 0001 C CNN "Manufacturer_No"
  319. 1 2450 3650
  320. 0 1 -1 0
  321. $EndComp
  322. $Comp
  323. L Device:R_Small R2
  324. U 1 1 5E7D0D47
  325. P 2900 3050
  326. F 0 "R2" V 2800 3000 50 0000 L CNN
  327. F 1 "4.7k" V 3000 2950 50 0000 L CNN
  328. F 2 "Resistor_SMD:R_0603_1608Metric_Pad1.05x0.95mm_HandSolder" H 2900 3050 50 0001 C CNN
  329. F 3 "" H 2900 3050 50 0001 C CNN
  330. F 4 "Yageo" H 2900 3050 50 0001 C CNN "Manufacturer"
  331. F 5 "RC0603FR-074K7L" H 2900 3050 50 0001 C CNN "Manufacturer_No"
  332. 1 2900 3050
  333. -1 0 0 1
  334. $EndComp
  335. Text Notes 4750 3000 0 60 ~ 0
  336. Same side FFC mirrors the pins!
  337. Wire Wire Line
  338. 2200 3450 2200 3650
  339. Wire Wire Line
  340. 2900 2950 2900 2850
  341. Connection ~ 2900 2850
  342. Wire Wire Line
  343. 2900 2850 2700 2850
  344. Wire Wire Line
  345. 2900 3150 2900 3650
  346. Connection ~ 2900 3650
  347. Wire Wire Line
  348. 2900 3650 3350 3650
  349. Wire Wire Line
  350. 2550 3650 2900 3650
  351. Wire Wire Line
  352. 2350 3650 2200 3650
  353. Connection ~ 2200 3650
  354. Wire Wire Line
  355. 2200 3650 2200 4250
  356. Text Notes 6650 3500 0 60 ~ 0
  357. TODO: Flip SDA/SCL?!
  358. $EndSCHEMATC