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Rcl57 mcu psu bp7

tomcircuit·rcl57mcu·hardware/rcl57_debug_psu/misc/rcl57_mcu_psu_bp7.kicad_pcb

Rcl57 mcu psu bp7 PCB layout, top view — open source STM32 board by tomcircuit

About the Rcl57 mcu psu bp7 PCB

Rcl57 mcu psu bp7 is an open source STM32 PCB design by tomcircuit, published on GitHub. It is a 4-layer board measuring 39.2 × 37 mm, with 35 components from 27 distinct parts.

Its main chip is the STM32F103TBUX, from the STM32 family. Other key parts include the TLC5929PWP, TLV70033_SOT23-5, 11AA080/TT and Microchip MCP73831T-2ACI/OT. By type, the board carries 9 connectors, 8 capacitors, 6 resistors, 5 ICs, 4 transistors and 2 diodes.

It belongs with the retro computing designs in this gallery.

From the project

MCU-based retrofit to TI-57 Programmable Calculators

This project came about because I stumbled across a TI-57 calculator with a "bad brain". The TMC1501 calculator-on-a-chip was faulty. This, in turn, led me to read more about this particular calculator and how the CPU inside functions.

Fortunately, I am 'standing on the shoulders of giants' here - three people that have been of great help to me are Joerg Woerner, Jeff Parsons and Paul Novaes. All have humored me by answering my emails and helping me understand how the hardware works.

Main components on the Rcl57 mcu psu bp7

STM32F103TBUXTLC5929PWPTLV70033_SOT23-511AA080/TTMicrochip MCP73831T-2ACI/OT

Rcl57 mcu psu bp7 bill of materials (BOM)

35 components, 27 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
STM32F103TBUX
STM32F103TBUx
U1
1
TLC5929PWP
U2
1
TLV70033_SOT23-5
U3
1
11AA080/TT
U4
1
Microchip MCP73831T-2ACI/OT
MCP73831-2-OT
U101
4
DMP2240UDM-7
Q1, Q2, Q3, Q4
1
TMC1500 p1-13
J1
1
TMC1500 p28-16
J2
1
STLINK
J3
1
Molex 105017001
USB_B_Micro
J101
1
S2B-PH-K-S(LF)(SN)
JST PH 2mm
J102
1
CALC
J103
1
DUMMY
J104
1
RCL57_BOARD
J201
1
DEBUG
J202
1
NoDiode
JP1
1
MBR0520
D2
1
Wuerth 156120VS75300
LED
D101
4
100NF
100nF
C1, C2, C4, C5
2
4.7UF
4.7uF
C3, C6
Show 7 more
QtyPartRefs
2
MuRata GRM21BR71C475KE51L
4.7uF
C101, C102
1
6.8K
R1
1
47K
R2
1
47K
R3
1
330
470
R4
1
4.7K
R101
1
470
R102

Rcl57 mcu psu bp7 design files

The KiCad project lives in the tomcircuit/rcl57mcu repository on GitHub; these links point at the commit this page was built from.

Rcl57 mcu psu bp7: common questions

What microcontroller does the Rcl57 mcu psu bp7 use?

The Rcl57 mcu psu bp7 is built around the STM32F103TBUX, from the STM32 family.

How big is the Rcl57 mcu psu bp7 PCB?

The Rcl57 mcu psu bp7 measures 39.2 × 37 mm, has 4 copper layers and is 1.58 mm thick.

How many components are on the Rcl57 mcu psu bp7?

35 components, from 27 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Rcl57 mcu psu bp7 design files?

From the tomcircuit/rcl57mcu repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Rcl57 mcu psu bp7 design in my own project?

The repository has no license, so all rights stay with tomcircuit. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Rcl57 mcu psu bp7 without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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