
This week the new boards for LittleBen came in. I just could not wait to build one but had little time to do so. Until today I found a little hour to solder one. The new boards have seem to fixed all the issues the previous had. The buttons fit the panel and no wires needed to make it run. I did had to do a little coding, some button de bouncing and this rotary goes the other way.
But it working without any issues. Have been testing it with my supersixteen sequencer and all looks good so will be putting them up in the shop. The code will be on Github as open source. I’m still thinking about releasing the files for the PCB’s but it would be nice to at least get some of the R&D cost back before I do.
Read more for the BOM and some pictures
C1 | 1 | 100n | Unpolarized capacitor |
C2 | 1 | 47uf | Polarized capacitor |
C3 | 1 | 3.3Uf | Polarized capacitor |
C4 | 1 | 100nf | Unpolarized capacitor |
ClockOut1, ClockOut2, ClockOut3, ClockOut4, Play1, ResetOut1, ResetOut2, ResetOut3, ResetOut4, Stop1 | 10 | AudioJack2_SwitchT | Audio Jack, 2 Poles (Mono / TS), Switched T Pole (Normalling) |
D1 | 1 | 1N4148 | 100V 0.15A standard switching diode, DO-35 |
J1 | 1 | Conn_01x10 | Generic connector, single row, 01×10, script generated (kicad-library-utils/schlib/autogen/connector/) |
J2 | 1 | Conn_01x10 | Generic connector, single row, 01×10, script generated (kicad-library-utils/schlib/autogen/connector/) |
J3 | 1 | Conn_01x08 | Generic connector, single row, 01×08, script generated (kicad-library-utils/schlib/autogen/connector/) |
J4 | 1 | Conn_02x05_Odd_Even | Generic connector, double row, 02×05, odd/even pin numbering scheme (row 1 odd numbers, row 2 even numbers), script generated (kicad-library-utils/schlib/autogen/connector/) |
J5 | 1 | Conn_01x08 | Generic connector, single row, 01×08, script generated (kicad-library-utils/schlib/autogen/connector/) |
Q1, Q2 | 2 | 2N3906 | -0.2A Ic, -40V Vce, Small Signal PNP Transistor, TO-92 |
R1, R2, R3, R4, R5, R6, R7, R8 | 8 | 1K | Resistor |
R9, R11, R12, R14 | 4 | 100k | Resistor |
R10, R13 | 2 | 1m | Resistor |
R15 | 1 | 10k | Resistor |
SW1 | 1 | Rotary_Encoder_Switch | Rotary encoder, dual channel, incremental quadrate outputs, with switch |
SW_PLAY1, SW_STOP1 | 2 | SW_Push | Push button switch, generic, six pins 7x7mm push button |
SW_PLAY1, SW_STOP1 | 2 | CAP | A01 Micro Tactile (aliexpress) |
U1 | 1 | TM1637Display | TM1637 0.36 (aliexpress) https://www.aliexpress.com/item/32866425287.html |
U2 | 1 | 74HC595 | 8-bit serial in/out Shift Register 3-State Outputs |
U4 | 1 | L7805 | Positive 1.5A 35V Linear Regulator, Fixed Output 5V, TO-220/TO-263/TO-252 |
XA1 | Arduino_Mini_01_Socket | Arduino Pro Mini 328 – 5V&16MHz |