
Development and small-batch production of custom embedded electronics based on Raspberry Pi, ESP32 and M-BUS
Zihatec GmbH
ZiesarNew on Amplifa
Electronics Development & Embedded Systems
Zihatec GmbH, based in Ziesar (Brandenburg), develops custom hardware and software solutions for industrial and professional applications. Its core competencies include hardware development based on Raspberry Pi and Compute Modules (CM4/CM5), ESP32 hardware and software development including firmware, the implementation of smart metering solutions (M-BUS, eBUS, RS485/Modbus, HAN/P1) and industrial communication interfaces such as RS485/RS422, CAN, Ethernet and BACnet MS/TP. Projects are supported from consulting and concept development, through requirement/functional specifications and feasibility analyses, to circuit design, PCB layout and prototype construction. In addition, the company offers custom enclosure solutions (DIN rail, wall mounting, IP67) with mechanical machining, type plates and UV direct printing, as well as the production of prototypes and small series including component sourcing, coordination of assembly, programming, testing and device assembly. Custom test equipment, functional testers and test fixtures are also developed. Applications can be found, among others, in building automation, smart metering, measurement and data acquisition, and machinery and plant control.
- Site
- Ziesar
- Processes
- Consulting & concept development for embedded electronics (requirements capture,, Hardware and software development with Raspberry Pi and Compute Module (CM4/CM5), carrier boards,, ESP32 hardware & software development incl. firmware development, in-house design, Smart metering & M-BUS development (M-BUS master/slave, eBUS, RS485/Modbus RTU, HAN/P1, gateways), Industrial communication & interfaces (RS485/RS422, Modbus RTU, CAN, Ethernet, BACnet MS/TP,, Custom enclosure solutions (mechanical machining of standard enclosures, cut-outs,, Production of prototypes and small series (sourcing of PCBs/components, coordination of SMD and, Programming of microcontrollers and assemblies (in-circuit programming)
- Materials
- Raspberry Pi & Compute Module CM4/CM5, ESP32 (Espressif), Printed circuit boards, Plastic enclosures
- Certificates
- Custom test equipment and functional testers, Electrical testing of assemblies, Automated functional testing with logging
- Industries
- Industrial and professional applications, Smart metering / energy sector, Building automation, IoT / remote monitoring, Measurement and data acquisition, Machinery and plant control
- 01
Consulting & concept development
- 02
Hardware and firmware development
- 03
PCB layout
- 04
Prototype construction
- 05
Sourcing of PCBs and components
- 06
Coordination of SMD/THT assembly
- 07
Programming & testing
- 08
Enclosure machining & assembly
- 09
Small-batch production
Materials & Platforms
Raspberry Pi & Compute Module CM4/CM5
Platform for custom carrier boards, HATs and expansion boards for industrial applications.
ESP32 (Espressif)
Platform for custom boards including firmware, OTA and communication development.
Printed circuit boards
Base material of the developed assemblies, from sourcing to assembly.
Plastic enclosures
Machined standard enclosures (DIN rail, wall, IP67) with type plate and UV direct printing.
Location

Ziesar
DEHead office with development and small-batch production
- Lot size
- Prototypes to small series
- Materials
- Printed circuit boards, plastic enclosures
- Test and test equipment (in-house production)
- In-circuit programming
- UV direct printing
- mechanical enclosure machining
Inside the production

Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Consulting & concept development for embedded electronics (requirements capture,Engineering | – | – | – | – | – |
| Hardware and software development with Raspberry Pi and Compute Module (CM4/CM5), carrier boards,Engineering | – | – | – | – | Leiterplatte |
| ESP32 hardware & software development incl. firmware development, in-house designEngineering | – | – | – | – | Leiterplatte |
| Smart metering & M-BUS development (M-BUS master/slave, eBUS, RS485/Modbus RTU, HAN/P1, gateways)Engineering | – | – | – | – | Leiterplatte |
| Industrial communication & interfaces (RS485/RS422, Modbus RTU, CAN, Ethernet, BACnet MS/TP,Engineering | – | – | – | – | Leiterplatte |
| Custom enclosure solutions (mechanical machining of standard enclosures, cut-outs,Oberfläche | – | – | – | small quantities – small and medium quantities | Kunststoff |
| Production of prototypes and small series (sourcing of PCBs/components, coordination of SMD andMontage | – | – | – | prototypes – small series | Leiterplatte |
| Programming of microcontrollers and assemblies (in-circuit programming)Montage | – | – | – | – | – |
| Manufacture of custom cables and connectionsMontage | – | – | – | – | – |
| Assembly of PCBs, assemblies and complete devices; installation into custom enclosures;Montage | – | – | – | – | – |
| Testing and test equipment development (custom test equipment, functional testers, test adapters,Prüfung | – | – | – | – | – |
Additional services
Testing & Test Equipment
For prototypes and series products, custom test equipment, functional testers and test adapters are developed; assemblies, inputs/outputs and communication interfaces are tested with automated functional tests, documented test reports and in-circuit programming during the test sequence.
| Evidence | Ziesar |
|---|---|
| Custom test equipment and functional testers | |
| Electrical testing of assemblies | |
| Automated functional testing with logging |
History
- ca. 2004
According to its website, the company has existed for over 20 years (exact year of foundation not specified).