
TinyNumber
ADDTDR/Pitanga
Prototype 0.01 | Pitanga V1 | Pitanga V2.1a :-------------------------:|:-------------------------:|:-------------------------: | |

Prototype 0.01 | Pitanga V1 | Pitanga V2.1a :-------------------------:|:-------------------------:|:-------------------------: | |
Ltp kikad is an open-source printed circuit board by ADDTDR, from the ADDTDR/Pitanga repository on GitHub, published under the MIT licence. It is a 2-layer board of 65 × 56.5 mm with 54 parts on 96 nets, routed with 702 tracks and 74 vias.
It is built around the PCA9306DP, LTP-305G and SM04B-SRSS-TB(LF)(SN). Its parts include 16 resistors, 12 capacitors, 5 switches, 3 ICs and 3 diodes.
| Prototype 0.01 | Pitanga V1 | Pitanga V2.1a |
|---|---|---|
![]() | ![]() | ![]() |

| Qty | Value | Footprint | References |
|---|---|---|---|
| 12 | 47k | Resistor_SMD:R_0603_1608Metric | R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R13 |
| 6 | LTP-305G | Library:DIPS762W50P254L1850H400Q14N | DS1, DS2, DS3, DS4, DS5, DS6 |
| 5 | SW_Omron_B3FS | Button_Switch_SMD:SW_SPST_Omron_B3FS-105xP | SW1, SW2, SW3, SW4, SW5 |
| 4 | RPi_Hat:RPi_Hat_Mounting_Hole | , , , | |
| 4 | 15uF | Capacitor_SMD:C_1210_3225Metric_Pad1.33x2.70mm_HandSolder | C1, C2, C6, C7 |
| 3 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C8, C11, C12 |
| 3 | 10uF | Capacitor_SMD:C_0603_1608Metric | C4, C9, C10 |
| 3 | 1N4148 | Diode_SMD:D_0805_2012Metric | D1, D2, D3 |
| 2 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C3, C5 |
| 2 | LOGO | LOGO | G***, G*** |
| 2 | SM04B-SRSS-TB(LF)(SN) | ltp_kikad:JST_SM04B-SRSS-TB(LF)(SN) | J2, J3 |
| 2 | SamacSys_Parts_HT16K33-28SOP | Holtek:SOIC127P1031X264-28N | IC2, locked |
| 2 | i2c | Resistor_SMD:R_0603_1608Metric | R17, R18 |
| 1 | 10k | Resistor_SMD:R_0603_1608Metric | R15 |
| 1 | 200k | Resistor_SMD:R_0603_1608Metric | R16 |
| 1 | PCA9306DP | Package_SO:TSSOP-8_3x3mm_P0.65mm | U1 |
| 1 | RPi_GPIO | LTP-305G:Pin_Header_Straight_2x20 | J1 |

ADDTDR/Pitanga
Prototype 0.01 | Pitanga V1 | Pitanga V2.1a :-------------------------:|:-------------------------:|:-------------------------: | |

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It measures 65 × 56.5 mm and has 2 copper layers, 1.6 mm thick.
54 parts, built around the PCA9306DP, LTP-305G and SM04B-SRSS-TB(LF)(SN). The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the ADDTDR/Pitanga repository on GitHub, at the commit this page was made from: the board is Hardware_Kicad/ltp_kikad.kicad_pcb and its schematic Hardware_Kicad/TinyNumber/TinyNumber.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).